In this Saturday’s “Hearts and Hooves Day” episode, the Cutie Mark Crusaders (Apple Bloom, Sweetie Belle and Scootaloo) devise a plan to make Miss Cheerilee and Big Macintosh fall in love (check out part of their hijinks in the exclusive clip above). Part of their master plan, however, involves a magic potion that may have more serious side effects than expected.

The episode is part of a “My Little Pony Fan Favorites Mare-a-thon” — sure to be a hit with bronies — that will air Saturday beginning at 6 a.m. Eastern/3 a.m. Pacific and again on Valentine’s Day at 8 a.m. Eastern/5 a.m. Pacific on the Hub TV network.

Check out a clip and some images from the Valentine’s Day epside in the gallery above.